It doesn't warn if the integer is known at compile time and within
the bounds of the string.

Discussion: http://comments.gmane.org/gmane.comp.compilers.clang.scm/47203
llvm-svn: 151943

diagnostic message are compared.  If either is a substring of the other, then
no error is given.  This gives rise to an unexpected case:

  // expect-error{{candidate function has different number of parameters}}

will match the following error messages from Clang:

  candidate function has different number of parameters (expected 1 but has 2)
  candidate function has different number of parameters

It will also match these other error messages:

  candidate function
  function has different number of parameters
  number of parameters

This patch will change so that the verification string must be a substring of
the diagnostic message before accepting.  Also, all the failing tests from this
change have been corrected.  Some stats from this cleanup:

87 - removed extra spaces around verification strings
70 - wording updates to diagnostics
40 - extra leading or trailing characters (typos, unmatched parens or quotes)
35 - diagnostic level was included (error:, warning:, or note:)
18 - flag name put in the warning (-Wprotocol)

llvm-svn: 146619

documentation) with one based on what GCC's __builtin_constant_p is actually
intended to do (discovered by asking a friendly GCC developer).

In particular, an expression which folds to a pointer is now only considered to
be a "constant" by this builtin if it refers to the first character in a string
literal.

This fixes a rather subtle wrong-code issue when building with glibc. Given:

const char cs[4] = "abcd";
int f(const char *p) { return strncmp(p, cs, 4); }

... the macro magic for strncmp produces a (potentially crashing) call to
strlen(cs), because it expands to an expression starting with:

  __builtin_constant_p(cs) && strlen(cs) < 4 ? /* ... */

Under the secret true meaning of __builtin_constant_p, this is guaranteed to be
safe!

llvm-svn: 146236

A mistyped function call becomes an inmplicit function declaration in C.
Suggest typo correction when one can be found.

llvm-svn: 145930

Remove warning for null characters in CFString literals.  Clang handles them just fine, and GCC 4.2 doesn't warn here either.

We added this warning back in 2007 when we were comparing against GCC 4.0.

llvm-svn: 127704

llvm-svn: 116572

llvm-svn: 116317

instead of asserting in IRGen. Fixes radar 8390459.

llvm-svn: 113253

llvm-svn: 112049

volatile-qualified types. Fixes <rdar://problem/8228293>.

llvm-svn: 109618

llvm-svn: 109452

their call expressions synthetically have the "deduced" types based on their
first argument. We only insert conversions in the AST for arguments whose
values require conversion to match the value type expected. This keeps PR7600
closed by maintaining the return type, but avoids assertions due to unexpected
implicit casts making the type unsigned (test case added from Daniel).

The magic is moved into the codegen for the atomic builtin which inserts the
casts as needed at the IR level to raise the type to an integer suitable for
the LLVM intrinsic. This shouldn't cause any real change in functionality, but
now we can make the builtin be more truly polymorphic.

llvm-svn: 108638

expected value type. This is necessary as the builtin is internally represented
as only operating on integral types.

Also, add a FIXME to add support for floating point value types.

llvm-svn: 108002

Update all of the testcases accordingly.

llvm-svn: 101795

checking into a single function and use that throughout. Remove some
now unnecessary diagnostics and update tests with now more accurate
diagnostics.

llvm-svn: 101610

llvm-svn: 92317

 - This is designed to make it obvious that %clang_cc1 is a "test variable"
   which is substituted. It is '%clang_cc1' instead of '%clang -cc1' because it
   can be useful to redefine what gets run as 'clang -cc1' (for example, to set
   a default target).

llvm-svn: 91446

llvm-svn: 83014

Roman Divacky!

llvm-svn: 82876

This implements PR5034 and rdar://6836445.

llvm-svn: 82614

llvm-svn: 82433

llvm-svn: 76709

llvm-svn: 73004

of the underlying _N builtin, not the the type of the pointee of the
actual type.  This ensures that atomics involving pointers end up
using the correct integer type when they are resolved, avoiding
aborts in codegen.

llvm-svn: 71218

semantic rules that gcc and icc use.  This implements the variadic
and concrete versions as builtins and has sema do the 
disambiguation.  There are probably a bunch of details to finish up
but this seems like a large monotonic step forward :)

llvm-svn: 71212

scheme to be more useful.

The new scheme introduces a set of categories that should be more 
readable, and also reflects what we want to consider as an extension 
more accurately.  Specifically, it makes the "what is a keyword" 
determination accurately reflect whether the keyword is a GNU or 
Microsoft extension.

I also introduced separate flags for keyword aliases; this is useful 
because the classification of the aliases is mostly unrelated to the 
classification of the original keyword.

This patch treats anything that's in the implementation 
namespace (prefixed with "__", or "_X" where "X" is any upper-case 
letter) as a keyword without marking it as an extension.  This is 
consistent with the standards in that an implementation is allowed to define 
arbitrary extensions in the implementation namespace without violating 
the standard. This gets rid of all the nasty "extension used" warnings 
for stuff like __attribute__ in -pedantic mode.  We still warn for 
extensions outside of the the implementation namespace, like typeof.
If someone wants to implement -Wextensions or something like that, we 
could add additional information to the keyword table.

This also removes processing for the unused "Boolean" language option; 
such an extension isn't supported on any other C implementation, so I 
don't see any point to adding it.

The changes to test/CodeGen/inline.c are required because previously, we 
weren't actually disabling the "inline" keyword in -std=c89 mode.

I'll remove Boolean and NoExtensions from LangOptions in a follow-up 
commit.

llvm-svn: 70281

llvm-svn: 68263

Tests and drivers updated, still need to shuffle dirs.

llvm-svn: 67602

llvm-svn: 59831

llvm-svn: 51552

params not getting installed for builtins when synthesized.

llvm-svn: 50676

llvm-svn: 45591

it from several places.  This merges the diagnostics, making them more
uniform and fewer in number. This also simplifies and cleans up the code.

Some highlights:
1. This removes a bunch of very-similar diagnostics.
2. This renames AssignmentCheckResult -> AssignConvertType
3. This merges PointerFromInt + IntFromPointer which were always treated the same.
4. This updates a bunch of test cases that have minor changes to the produced diagnostics.

llvm-svn: 45589

llvm-svn: 45239